- Switching from low-quality plastic dielectrics to cotton or air, especially for tweeters (this really removed the grudge or unpleasant edginess from the highs. The same edginess that makes you want to turn the music down)
- RCA interconnects, both good quality purchased ones and handmade unshielded, cotton covered, solid core, silver wire with silver Eichmann bullets.
- VPI brick
- Subwooder DSP and proper placement.
- Power cords